Humminbird Helix 7 Chirp Mega Si Fishfinder/Gps Combo G3 W/Transom Mount Transducer

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Humminbird Helix 7 Chirp Mega Si Fishfinder/Gps Combo G3 W/Transom Mount Transducer

HELIX® 7 CHIRP MEGA SI Fishfinder/GPS Combo G3 with Transom Mount Transducer 

The HELIX 7 CHIRP MEGA SI GPS G3 fish finder features MEGA Side Imaging, MEGA Down Imaging, Dual Spectrum CHIRP Sonar, AutoChart Live , GPS and Humminbird Basemap built-in. The 7", ultra-wide display gives you ample room to view the many pre-loaded split screen view options. 


  • HELIX 7- MEGA Side Imaging: See the world below like never before with crystal-clear viewing out to 125 feet on either side of your boat. You'll unlock new details with up to 3X more output than standard Side Imaging sonar.
  • HELIX 7- MEGA Down Imaging: Get unprecedented underwater clarity with coverage down to 125 feet below your boat. You'll unlock new details with up to 3X more output than standard Down Imaging sonar.
  • Dual Spectrum CHIRP: Before you cast, know what's down there thanks to long, well-defined fish arches, and a clear view of fish-holding structure and the bottom. Powered by our proprietary, Low Q CHIRP transducer, Dual Spectrum offers two ways to search: wide mode for maximum coverage and narrow mode for maximum detail.
  • SwitchFire Sonar: Take command of how your sonar returns appear. With two display modes, you can add or remove detail, account for water depth, temperature and turbulence, even watch lure presentations - all at the push of a button.
  • Humminbird Basemap Built-in: Our enhanced standard basemap provides you with a clear view of underwater terrain and surrounding points of interest so you can fish and navigate with total confidence. Identify buoys, day markers, hazards, marinas, contours, depth markers and much, much more. Includes charts of more than 10,000 lakes, plus coastal coverage for the U.S.
  • AutoChart Live: Create real-time maps of your fishing spots, with access to patented Humminbird® LakeMaster® features. Map depth contours, bottom hardness and vegetation as you drive your boat, with eight hours of built-in recording time.
  • LakeMaster Compatible: Upgrade to the unrivaled accuracy and detail of Humminbird LakeMaster maps. From easy-to-read contours, to highlighted depth ranges, to scrollable lake lists, you'll have all the tools you need to make every moment count
  • Includes transducer and mounting hardware, power cable, gimbal mounting bracket.

WarningWARNING: This product can expose you to chemicals including 1,3-Butadiene which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to

Manufacturer Part Number: 410950-1
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Manufacturer Part Number: 410950-1
  • Cartography Brand = Humminbird/Navionics
  • Included Transducer = XNT-9-HW-MSI-150-T
  • Screen Size = 7"
  • Touchscreen = No
  • Transducer Included = Yes
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Customer Questions
Does this unit track speed and water temperature or is another accessory needed?

GPS speed is included, and it will read the water temperature. The water temperature sensor is built into the included transducer for this unit.

Is this item brand new as in never been out of the box?

Yes, this product is brand new.

Does this unit have Bluetooth feature?

This does not have bluetooth. Any models with G3N will have that feature included.

What is the warranty?

The Humminbird Helix 7 G3 models have a one-year warranty covered through Humminbird directly. You can learn more about their warranty by clicking here.

Does unit come with trolling motor transducer mount

All Humminbird units come standard with a transom mounted transducer. Humminbird does have a transducer exchange program in which you can switch out the included transducer directly with them. Humminbird can be reached at 800-633-1468 for more information regarding their exchange program.

Is this unit compatible with I pilot link??

The G3 models are not compatible with the Ipilot link. You would have to purchase any of the G3N networking models.

Does this work with Mega 360?

This does not work with the Mega 360 transducer. You would need a Helix G3N/G4N 9 and up to work.

I wanted to buy a second power cord. I do not see one for helix 7 mega side chirp g3

That Helix 7 uses the Humminbird Pc11 Power Cord. Click here for the link to that power cord.

How long is the transducer cord?

The included transducer will have 20' of cable.

Does this come with a protective cover

No, a protective cover would need to be purchased separately. Here is the soft cover and here is the hard cover

Does the base mount swivel

No, this is a standard gimbal bracket. You can adjust the knobs to tilt the screen down up or slightly then tighten but it will not swivel.

Does this transducer support side imaging, down imaging, and chirp/sonar modes? Or, do I need to get another transducer to support all modes the head unit is capable of producing?

Yes, the included transducer will have the following specs: Dual Spectrum CHIRP Frequencies: Full: 150-220 kHz, Narrow: 180-240 kHz, Wide: 140-200 kHz Dual Spectrum CHIRP Max Depth: 1200ft (365m) Side Imaging Frequencies - Max Range (side-to-side): 455kHz: 440-500 kHz - 800ft (146m), MEGA SI: 1075-1150 kHz - 250ft (76m) Down Imaging Frequencies - Max Depth: 455kHz: 440-500 kHz - 125ft (38m), MEGA DI: 1075-1150 kHz - 75ft (23m)

Can this operate with an i-pilot trolling motor?

This unit is not compatible. i-pilot requires a networkable unit. This unit does not have networking capabilities.

does it include navionics?

Hi, this product package does NOT include the navionics chip, and only has the basemap for the unit. The package including navionics is our product code HUM410950-1NAV

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Return Policy

Hodges Marine accepts returns for up to thirty (30) days after shipment. Our return policy does not apply to the following goods: Open software, mapping/chart data cards, international orders, freight truck only items, and special order items. These items are not eligible for return, refund or exchange. Shipping charges (if any) are non-refundable. If your return is accepted by Us, We will provide one of the following within a reasonable time: an exchange of merchandise for the item returned, a non-transferable merchandise credit, a credit to the payment card or original method of payment used to pay for the item, a check, or another remedy that we determine in good faith is appropriate in the circumstances. Customer must request a return merchandise authorization (RMA) through the product returns link on our website or by emailing us at [email protected] A RMA number will be issued with instructions for returning the package within a reasonable time (normally 1-3 business days).

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